Ext.regModel('ordenCompraModel', {
    fields: [
        {name: 'ordenCompra', type: 'string'},
        {name: 'empresa',  type: 'string'},
        {name: 'orgCompras', type: 'string'},
        {name: 'condPago',  type: 'string'},
        {name: 'claseDoc',  type: 'string'},
        {name: 'grpCompras',  type: 'string'},
        {name: 'moneda',  type: 'string'},
        {name: 'tc',  type: 'string'},
        {name: 'codProveedor',  type: 'string'},
        {name: 'proveedor',  type: 'string'},
        {name: 'fecha',  type: 'string'},
        {name: 'totalNeto',  type: 'string'},
        {name: 'totalBruto',  type: 'string'},
        {name: 'grpLiberacion',  type: 'string'},
        {name: 'estLiberacion',  type: 'string'},
        {name: 'indLiberacion',  type: 'string'},
        {name: 'codLiberacion',  type: 'string'}
    ]
});